package cn.itcast.zt.java8.model.single.model;

// 懒汉式
public class Singleton1 {
    private static Singleton1 instance;

    private Singleton1() {

    }

    public static synchronized Singleton1 getInstance() {
        if (instance == null) {
            instance = new Singleton1();
        }

        return instance ;
    }
}
